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Brewster Windows
- CASTECH offers windows in substrates made from multitude of Optical glass, Fused Silica, Calcium Fluoride(CaF2), Barium Fluoride(BaF2), Germanium (Ge), Silicon (Si) and Zinc Selenide (ZnSe), etc.
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Introduction:
CASTECH offers windows either in multitudious substrates (Optical glass, Fused Silica, CaF2, BaF2, Ge, Si, ZnSe) or coated parts with multiple anti-reflection coating options covering wavelength range of Ultraviolet (UV), visible, or Infrared (IR). Millions of stock and custom precision windows are manufactured by different processing methods such as double-sided polishing, conventional polishing and ion beam figure(IBF) to guaranty high surface figure, low scatter, and high laser damage threshold to satisfy even the most demanding requirements.
Features:
- Material from DUV to FIR
- Custom dimensions and shapes
- Diameter from 0.5 to 600 mm
- Flatness: λ/10@632.8nm ( λ/40 by IBF)
- Standard and custom AR coating options available
- High laser damage threshold
Specifications：
| Material | BK7 or UV fused silica |
| Diameter Tolerance | +0/-0.15mm |
| Thickness Tolerance | ±0.25mm |
| Clear Aperture | ＞Central 85% of diameter |
| Parallelism | ＜5″ |
| Surface Quality | 20/10 |
| Transmitted Wavefront |
λ/10 @632.8nm |
| Brewster Angle (θ) |
56.6° @588nm（BK7） 56.1° @308nm（UVFS） |
| Chamfers |
＜0.35mm face width ×45° |
• Most sizes λ /20 transmitted wavefront, 10-5 surface quality；
• All kinds of coatings are available；
• Custom designs for other sizes and coatings are also available upon request.
Order Information：
| WINB | ---- | 100 | ---- | 020 | ---- | BK7 |
| ↓ | ↓ | ↓ | ↓ | |||
| Product Code | Dia=10.0mm | Thickness=2.0mm | Material |
Brewster Windows：
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Optical Windows_CASTECH.pdf
Size:2021-08-10 14:20:35
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